This is the blog maintained by staff at Microsoft to provide general information, announcements and provide answers to Frequently Asked Questions (FAQs) related to daylight saving time (DST) and time zone (TZ) changes around the world.
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Tag: General Questions

In preparation for a potential time zone move, customers may use the Outlook Time Zone Data Update Tool with the /PHYSICALMOVE switch, which has promoted some questions as noted here: Q: Are there negative effects from running the tool multiple times on the same mailbox? (i.e., on the first pass, original time zone = Central…

Q: I checked http://support.microsoft.com/gp/dst_prodlist#Ent and under Entourage it states to download Microsoft Office 2004 for Mac 11.3.7 update. I checked the KB for the update and it mentioned nothing about DST. I checked the readme for the download and it updates the following 3 files: Microsoft Component Plugin Microsoft Excel Microsoft Ole Automation Can someone…

Q: We currently run Exchange 2003 SP1, and also have Blackberry server. Up to now our understanding was that we need to apply the standard DST O/S fix to the Exchange server, but would only need to install the CDO patch if we had applications that use CDO – and Microsoft was only releasing the…

Q: Is there any reason not to recommend the use of the /forcerebasesuppressallupdates switch with tzmove? And what is the likely scenario why someone would get the error below? Get the following error with the /FORCEREBASESUPPRESSALLUPDATES switch. A: We do not recommend that customers use the /forcerebasesuppressallupdates switch with tzmove because ALL appointments…

Q: I have had this question come in from a customer around rebasing of calendars: In the Knowledgebase article KB931667: DST using Outlook TZmove, the following is stated: You can also rebase calendar items that are stored in additional calendars that may exist in a user’s mailbox. For example, a command for rebasing the items in…

Q: I’m attempting to install the new Exchange Calendar Update tool on a system that had the previous version installed – I removed the previous version via Add/Remove Programs, but when I execute the installation for the new version, I get an option to repair or remove and choosing either option results in an error…

Q: “If we updated for this [US and Canadian daylight saving time] change this spring, we should be covered for the fall time change, correct?” A: Generally, the answer is yes. As noted here, it depends: we recommend that companies review their specific situation. Companies that do not have a presence in an affected time zone…

Q: Is there a list of the time zones [and daylight saving time/ summer time] changes in Windows?” A: yes, there is a list of all changes included in KB article 933360, “August 2007 cumulative time zone update for Microsoft Windows operating systems,” that notes that the following changes have been made since the previous…

Q: Will update KB 933360 be released for WSUS deployment and will it be classified as an Update Rollup? A: Yes, Microsoft Windows operating systems KB 933360 is now available (http://support.microsoft.com/kb/933360/), “August 2007 cumulative time zone update for Microsoft Windows operating systems.” KB 933360 will be issued as an “Update Rollup” and available via WSUS. …